Chimney.



UNITED STATES PATENT OFFICE.

BERNHARD H. MILLER, OF MENDOTA, ILLINOIS.

CHIMNEY.

SPECIFICATION forming part of Letters Patent No. 717,696, dated January 6, 1903.

Application lilecl July 26, 1902. Serial No. 117,130. (No model.)

To @ZZ whom it may concern:

. Be it known that I, BERNHARD H. MILLER, a citizen of the United States, residing at Men-Y dota, in the county of Lasalle, State of Illinois, have invented certain new and useful Improvements in Chimneys, of which the follow- ,ing is a specification.

This invention relates to Ventilating chimhey-tops; and the object of the invention is to provide a simple, cheap, and durable top, made, preferably, of clay, in sections or parts adapted to be easily assembled in position by a bricklayer and in much less time than it would take to build the chimney to the same height with bricks.

The invention will be fully described hereinafter, reference being had to the accompanying drawings, in which- Figure 1 is an elevation of a chimney-top embodying my invention, and Fig. 2 is a vertical section of the same.

The inner iiue is indicated by A, and its lower end is designed to fit intoV the chimney# same or substantially the same cross-sec-A tional area and may thus be supported by the flue-lining.

B is a base having a central aperture to fit snugly around the flue A, and the base will be supported upon the top course of brick of the chimney and will preferably be cemented thereto.

The outer flue C surrounds the flue A to leave an air space or chamber b between them, such chamber being closed at its lower end by the base B, upon which the iiue C is sup ported. The flue G may be cemented or otherwise secured at its lower end to the base B. The flue C is provided near its upper end with an exterior ange c, which preferably will extend entirely around it and form a support for the cap D,which ts over the outer ue C. The flue C is provided near its lower end with a plurality of narrow elongated openin gs e, through which air may pass into the airchamber b. Preferably these openings will incline upwardly from the outer to the inner side of the due C, as clearly shown in Fig. 2. The'inner iiue A will extend a short distance above the outer flue C, and the cap D will expand outwardly between its upper and lower ends, and preferably the discharge-opening of the cap will be of somewhat greater area than that of the inner iiue A. p The dues A and C, the base B, and cap D will preferably be made of clay, and the outer ue and the cap will Apreferably be vitried on their outer surfaces. Y A

It is intended that the iiues A and C shall extend at their lower ends within the roof of the building, which latter will thus aid in supporting the outer flue in position. If desired, the outer flue may be painted and striped to imitate brick; but this is -of course optional with the user. The ilues may be made of different lengths and cross-sectional areas, and where two or more smoke-dues extend up side by side within a chimney the flue A may be of such size as to receive the smoke from all of them, and of course the base B, iiue C, and cap D will be of sizes to correspond. In Fig. 1 the top is designed to be common to two chimney-dues.

Without limiting myself t0 the precise cona struction illustrated and described, I claim-a l. A chimney-top consisting of an inner-and an outer uewith an air-chamber between them, the inner due extending beyond the outer flue at each end and its lower'end adapted to extend into and form acontinuation of a chimney-Hue, a base surroundingthe inner flue and adapted to rest upon the top of a chimney and form a support for the outer ue, and the outer Iiue having air-inlet openings near its lower end and a ange near its upper end, and a cap adapted to tit over the upper end of the outer flue and be supported upon said flange, substantially as set forth.

2. The combination with a chimney having flue-linings, of a chimney-top consisting of an inner flue extending at its lower end into the chimney-Hue and supported upon the fluelining, a base supported upon the top of the chimney and having' an opening through which the said inner flue extends, an outer iiue su rrounding said inner hue to form an airchamber between them and supported upon the said base and terminating at its upper end in a planebelow the inner ue, said outer flue Ico having air-inlet openings near its lower end name to this specification in the presence of and an exterior ange near its upper end, and two subscribing Witnesses. a cap fitted over the upper end of the outer Hue and supported upon said ilange,said cap BERNHARD H' MILLER 5 being expanded outwardly between its upper Witnesses:

and lower ends, substantially as set forth. BENJ. J. FEIH,

In testimony whereof I have signed my GEORGE D. TOWER. 

